GCN Circular 10202
A. Cucchiara, D. Fox (PSU), A. Levan (Warwick U.) and N. Tanvir (U. Leicester) report: On November 28.40 UT we observed the afterglow of the Swift GRB 091127 (Troja et al. GCN 10191; Smith et al. GCN 10192) with the GMOS-N spectrograph on Gemini North. The observation consists of 2 exposures of 900 seconds each with the R400 grating, covering 4000-8000A wavelength range. The spectra shows a bright featureless continuum and two emission lines which we identified as [OIII]4959 and 5007 respectively at the common redshift of z = 0.490. Therefore we suggest this as redshift for GRB 091127. We thank the Gemini-N support staff, in particular A. Stephens, for performing these observations.